The gas impingement system works much better as a stoner bong than the piston system on the AK. That AK gas piston blocks too much of the recycled smoke , making the stoner's work too hard to get high. Of course the AK will run better with all kinds of stoner weed ammo even the dreaded K pot made from wild ammunition. While the AR delivers a cleaner blast of stoner stupidity , the AK will work even with stems and seeds. So it is a tough decision ... Since most stoner's have trouble making decisions , they will use whatever is on hand..